I have trades open for weeks on end thank you, and I sleep well! but I work on different time frames to you!
I would not suggest a published risk management "System", I would not even suggest my own system to you. You need to develop "your own" risk management. Taking other peoples Systems doesn't always work (even if it works for them), as you need to be in-tune with it and comfortable you understand it and are happy with it. If you develop your own risk management controls, you should be happy with them, especially when they perform consistently. All we suggest is you use the "suggested tools" to develop your own risk control, ie.position sizing, stop losses, risk:reward, etc.. the exact way you develop/use these is up to you.